¡@¡@A single chip of variable length FFT processor is presented in this thesis. This processor can be applied for the applications with 128/256/512/1024/2048-point FFT. This processor is based on SDF (single path delay feedback) pipeline architecture with radix-2^3 computation element. The number of bits for input data and twiddle factors is carefully selected by system simulation to meet the requirements of OFDM system. In addition, we propose a feedback twiddle factor generator to instead the lookup table for twiddle factors to reduce the storage size of memory. The FFT processor is carried out by CMOS 0.35£gm 2P4M process with core area 3.381x3.3625 mm^2. In the gate level simulation, the output data rate of this FFT processor is above 22.72MHz, so the processor can meet the requirement of IEEE 802.16e standard.

The purpose of this study is to devise a teaching program integrating Big6 skills into project-based learning of social studies. Applying Big6 skills as a learning scaffold, the teaching program helps students to enjoy project-based teaching modes, to cultivate basic information literacy and to promote abilities to learn better in social studies. The research object is 34 students from the 4th grade of elementary school, and the action research is a two-stage and two-circle one. The researcher tried to understand the students¡¦learning status and get the whole picture of the teaching activity by means of collecting and analyzing data such as information literacy questionnaire, the scale for critical thinking test made by Chiu-Ching Chen, activity learning sheets, student inter-evaluations, student self-evaluations, teacher observations, teaching diaries and interview records. The results of the study are as follows: 1. Big6 skills, integrated into the social project-based learning applying two-stage teaching, is suitable for grade four of elementary school. 2. The students who have experienced Big6 skills integrated into the social project-based learning do promote in information literacy, group learning, expression, listening and the ability of using Big6 skills. 3. Due to the shortage of the study time or the not suitable for study tools, the students¡¦critical thinking is not promoted after experiencing Big6 skills integrated into the social project-based learning. 4. The students consider the integration of information and the evaluation as the most difficult steps in the Big6 method. 5. Teachers and students both identify with Big6 skills integrated into the social project-based learning. Finally, integrating the mentioned findings, the researcher offers some suggestions on the future teaching plan as follows: 1. Supply learning scaffold to promote students¡¦learning effects. 2. Integrate information course into language course can save time for learning. 3.Cultivate students¡¦abilities of reading, summarizing and integrating reading materials. 4. Help students to collect information from varied sources. 5. Extend teaching time and carry out each teaching steps.

In recent years, E-learning has become more and more popular, and reflection is one of the most important factors that affect learning. Therefore, the issue on how to motivate learners to reflect on web-based learning is worth discussing. Our study use high level prompts and peer assessment to investigate how these two factors influence learners¡¦ reflection level, reflection attitude, and reflection intention. 157 college students were asked to use the system designed in this research, and the experimental learning subject was biology. Fourteen learning situations are presented in this research according to the difference of high level prompts (giving/not giving prompts), peer assessment (no peer assessment, peer observation, and peer feedback), observation (high quality/low quality observation), feedback (positive/negative feedback). The learners were randomly assigned to one situation. The result showed that giving high level prompts and high quality observation can improve learners¡¦ reflection level. If a learner is only given high quality observation, though not given high level prompts, his reflection level is still equal to the one who is given high level prompts but not given high quality observation. The result also showed that if a learner receives positive feedback, his reflection attitude and reflection intention will be higher than the one who receives negative feedback.

In view of international digitalization and information trend, and to cope with the New 1-9 Curriculum education policy, the Taiwanese increasingly value information technology education development and methods. The researcher integrates Big6 information skills to school base curriculum with topic study process. A new teaching plan consisting two cycles is developed to test on a sample of 35 fourth graders. The researcher demonstrates the first cycle, and the students actively process the second cycle. The two-cycle teaching plan is to train students to utilize Big6 information skills in researches and promote students¡¦ capabilities of team work, demonstration, presentation, and critique. The researcher conducted and analyzed the data based on three sources consisting quantitative measuring tools, records, and reflections. Quantitative measuring tools include information technology usage investigation, information skill level self-check list, and deliberated comment tables. Records involve students¡¦ learning diaries, teacher¡¦s observant diaries and the teams¡¦ self-checked lists. Reflections engage teacher¡¦s and students¡¦ self reflections. The results of this research are as follows: 1. Big6 skills suit to harmoniously utilize in the two-cycle senior topic instruction program. 2. Applying Big6 skills in project-based learning promotes most students¡¦ learning in five areas including Big6 skills in research processes and study methods, topic-related information, research team work skills, information skills, and critically deliberating behavior. 3. Tested sample showed higher motivation in this process. 4. The researcher could acquire the growing expertise, which includes grasping the value of research, promoting the abilities of designing and compiling instruction program, enhancing the skill of applying and integrating the information technology, utilizing ¡§divided teams project-base¡¨ instruction model for research, and creating the students¡¦ accomplishment with accessing diversificately.

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Abstract This study, based on the strategic analysis of resource-based theory, and a systemic framework of port strategy, is planed by cooperating resources, businesses, organization, coordination and control. In a great corporate strategy, all of these elements are aligned with one other. That alignment is driven by the nature of the firm¡¦s resources. The firm¡¦s resources are the unifying thread and, ultimately, determine the others (Collis & Montgomery, 1998). Which to analyze Kaohsiung Port strategy gathered data from deep interview and second-hand materials. According to the survey, we judged the five elements of Kaohsiung Port to be ;the general nature of resources; the narrow scope of businesses; the large corporate office size; the transferring style of coordination mechanism; and the financial control system. Thus, we suggest that the port enlarge the scope of businesses, reduce the size of corporate offices, and to revise the financial ¡]result¡^control system. These will make each element fit with its nature of resources, improve the consistency of each element, and create a synergy of strategy.

In Taiwan, the fire code is prescriptive in nature and is inappropriate to be utilized in buildings with large spaces and atria, where performance-based fire safety design method is applied. It is the goal of this dissertation to develop a design guide for this application. Through literature survey and theoretical analysis, the important parameters were induced, including: plume transport time lag, ceiling jet transport time lag, smoke entrainment rate, mechanical and natural ventilation rate. To predict smoke behavior and descending rate accurately, algebraic equations and field model were both used to calculate and compare with experimental result so that its applicability can be evaluated. Furthermore, a full-scale experiment has been conducted in the USTC campus to validate that the field model can predict the smoke behavior and descending rate accurately. Finally, the calculation models developed in this study were compiled into a guideline for fire engineering performance-based designs. Design examples were also demonstrated to explain its procedure in engineering application.

The current trend of learning is towards distant learning. Using distance learners¡¦ learning portfolios recorded by Web Site can help teachers understanding the learning state of students. Teachers can encourage or supervise students through Email based on their different behavior. Eventually, we hope to enhance students¡¦ participation and interest when they are attending distant learning. We develop learning support mechanisms using portfolios in order to help teacher understanding the learning status of students conveniently and easy to apply mechanisms in distant learning environment. Finally, we will assess the effects of mechanisms to prove it can help students positively. The results will drawing in two parts. First, students accepted encouragement and supervision from teachers were enthusiastically than students don¡¦t accepted encouragement and supervision from teachers when attended each unit of test and synchronous conference. Second, according the questionnaire appears both groups of students agreed that teacher should encourage or supervise them according their learning behavior. In a word, students really need help from teacher at the right moment. And our research have proved that distant learning environment need provide convenient mechanisms for teachers.